\begin{{align*}}
R_0 &=
\begin{{bmatrix}}
    r^0_g\\
    r^0_{{low}}\\
    r^0_{{mid}}\\
    r^0_{{high}}\\
\end{{bmatrix}} =
\begin{{bmatrix}}
    {param_price_constant} \hspace{{3pt}} ({error_price_constant}) \\
    {param_low_constant}  \hspace{{3pt}} ({error_low_constant}) \\
    {param_mid_constant}  \hspace{{3pt}} ({error_mid_constant}) \\
    {param_high_constant}  \hspace{{3pt}} ({error_high_constant}) \\
\end{{bmatrix}}
    \hspace{{33pt}}\sigma_{{\epsilon}} =
        {param_price_sigma} \hspace{{3pt}} ({error_price_sigma}) \\
R_1 &=
\begin{{bmatrix}}
    r^g_g & 0 & 0 & 0 \\
    r^g_{{low}} & r^{{low}}_{{low}} & r^{{mid}}_{{low}} & r^{{high}}_{{low}}\\
    r^g_{{mid}} & r^{{low}}_{{mid}} & r^{{mid}}_{{mid}} & r^{{high}}_{{mid}}\\
    r^g_{{high}} & r^{{low}}_{{high}} & r^{{mid}}_{{high}} & r^{{high}}_{{high}}\\
\end{{bmatrix}} =
\begin{{bmatrix}}
    {param_price_price} \hspace{{3pt}} ({error_price_price})
    & 0
    & 0
    & 0
    \\
    {param_low_price} \hspace{{3pt}} ({error_low_price})
    & {param_low_low}\hspace{{3pt}} ({error_low_low})
    & {param_low_mid} \hspace{{3pt}} ({error_low_mid})
    & {param_low_high} \hspace{{3pt}} ({error_low_high})
    \\
    {param_mid_price} \hspace{{3pt}} ({error_mid_price})
    & {param_mid_low}\hspace{{3pt}} ({error_mid_low})
    & {param_mid_mid} \hspace{{3pt}} ({error_mid_mid})
    & {param_mid_high} \hspace{{3pt}} ({error_mid_high})
    \\
    {param_high_price} \hspace{{3pt}} ({error_high_price})
    & {param_high_low}\hspace{{3pt}} ({error_high_low})
    & {param_high_mid} \hspace{{3pt}} ({error_high_mid})
    & {param_high_high} \hspace{{3pt}} ({error_high_high})
\end{{bmatrix}}
\end{{align*}}